Celestron C11-SGT - Appendix A - Technical Specifications

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Appendix A – Technical Specifications
Advanced Series 11078/11079 11025/11026 11045/11046 11066/11067
C6-S C8-S C9.25-S C11-S
Specifications:
Optical Design
1250mm(6") Schmidt-
Cassegrain
203mm (8") Schmidt-
Cassegrain
235mm (9.25") Schmidt-
Cassegrain
280mm (11") Schmidt-
Cassegrain
Focal Length
1500mm F/10 2032mm F/10 2350mm F/10 2800mm F/10
Finderscope
6x30 6x30 6x30 9x50
Mount
CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial
Eyepiece
25mm Plossl (60x) 25mm Plossl (81x) 25mm Plossl (94x) 40mm Plossl (70x)
Star Diagonal
1.25" 1.25" 1.25" 1.25"
Accessory tray
Yes Yes Yes Yes
Tripod
2" Stainless Steel 2" Stainless Steel 2" Stainless Steel 2" Stainless Steel
Technical Specs
Highest Useful Magnication
354x 480x 555x 660x
Lowest Useful Magnification
21x 29x 34x 40x
Limiting Stellar Magnitude
13.4 14 14.4 14.7
Resolution: Rayleigh
.92 arc seconds .68 arc seconds .59 arc seconds .50 arc seconds
Dawes Limit
.77 arc seconds .57 arc seconds .49 arc seconds .42 arc seconds
Light Gathering Power
459x unaided eye 843x unaided eye 1127x unaided eye 1593x unaided eye
Field of View: standard eyepiece
.83º .64º .55º .61º
Linear FOV (@1000 yds)
43.8 ft. 33.6 ft. 29 ft. 32 ft.
Optical Coatings - Standard
Starbright XLT Starbright Coating / XLT Starbright Coating / XLT Starbright Coating/ XLT
Secondary Mirror Obstruction
2.2" 2.7" 3.35" 3.75"
by Area
14% 11% 13% 12%
by Diameter
37% 34% 36% 34%
Optical tube length
16 inches 17 inches 22 inches 24 inches
Telescope Weight
52 lbs 54.5 lbs 73 lbs 91 lbs
Advanced GT
Additional Specifications
Hand Control Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Motor: Type DC Servo motors with encoders, both axes
Max Slew Speed 3º/second
Software Precision 24bit, 0.08 arcsec calculation
Hand Control Ports RS-232 communication port on hand control
Motor Ports Aux Port, Autoguide Ports
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes EQ North & EQ South
Alignment Procedures AutoAlign, 3-Star Alignment, Quick Align, Last Align
Database
40,000+ objects, 400 user defined programmable objects.
Enhanced information on over 200 objects
Complete Revised NGC Catalog 7,840
Complete Messier Catalog 110
Complete IC Catalog 5,386
Complete Caldwell 109
Abell Galaxies 2,712
Solar System objects 9
Famous Asterisms 20
Selected CCD Imaging Objects 25
Selected SAO Stars 29,500
Total Object Database 45,492